.sk {
    position: absolute;
    top: 39px;
    left: 186px;
    border-left: 1px solid red;
    padding: 2px 0 0 14px;
}
.nav {
    overflow: hidden;
}

.sk_list{
    float: left;
}
.sk_list li {
    height: 47px;
    line-height: 47px;
    float: left;
    font-size: 18px;
    font-weight: 700;
    margin: 0 29px;
}

.sk_com {
    float: right;
}
.sk_com li {
    float: left;
}
.sk_com li a{
    display: block;
    height: 47px;
    line-height: 49px;
    font-size: 14px;
    margin-right: 44px;
}
.sk_com li:last-child a::after{
    content: '\e91e';
    font-family: 'icomoon';
}

.sk_bd ul li {
    overflow: hidden;
    float: left;
    width: 290px;
    height:460px ;
    margin-top: 25px;
    margin-right: 13px;
    border: 1px solid transparent;
}
.sk_bd ul li:nth-child(4n){
    margin-right: 0;
}
.sk_bd ul li:hover {
    border: 1px solid #c81523;
}


